Hi Guys,
Is it possible by using tomcat 6.0.20 with different instances with diff
ips but same port no 80 on one system ???
I have three instances running on one machine named *a,b and c with each has
different IPS (192.168.205.10/11/12). *
I ran instance a on port 80 (it ran), but when I
Hi ,
I am trying to cluster 3 nodes on one machine, follow the instructions
http://tomcat.apache.org/tomcat-6.0-doc/cluster-howto.html
At Deployer className, i have changed
Deployer
className=org.apache.catalina.ha.deploy.FarmWarDeployer
Hi Guys,
I have tomcat 6.0.29 running different instances on same and different
hardware, I want to create log server on one system (nfs mount the file
system), so every instance must create log files in that place like
SERVER.catalina.2011-07-30.log, SERVER1.catalina.2011-07-30.log,
Tomcat 7.0.42 on RHEL6.
Assume that Tomcat is serving only one jsp page. Say it just rewrites a
parameter value from the querystring to the html within the jsp.
Also assume that there are ~200,000 users attempting to access that page -
say almost simultaneously.
What are the most relevant
Chris,
Thanks! Very helpful advice.
Best,
John
On Tue, Mar 4, 2014 at 1:54 PM, Christopher Schultz
ch...@christopherschultz.net wrote:
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA256
John,
On 3/4/14, 1:17 PM, John Smith wrote:
Tomcat 7.0.42 on RHEL6.
Assume that Tomcat is serving
The NIO connector has two attributes from the standard HTTP Connector
implementation, maxConnections and maxThreads with defaults of 1 and
200, respectively.
Can anyone shine some light on how these work together? If I'm allowing up
to 1 connections, would that mean I only have 200
Sorry, forgot: Tomcat 7.0.42
On Fri, Mar 7, 2014 at 3:59 PM, John Smith tomcat.ran...@gmail.com wrote:
The NIO connector has two attributes from the standard HTTP Connector
implementation, maxConnections and maxThreads with defaults of 1 and
200, respectively.
Can anyone shine some
Smith tomcat.ran...@gmail.com:
Sorry, forgot: Tomcat 7.0.42
On Fri, Mar 7, 2014 at 3:59 PM, John Smith tomcat.ran...@gmail.com
wrote:
The NIO connector has two attributes from the standard HTTP Connector
implementation, maxConnections and maxThreads with defaults of 1 and
200
How dumb am I being by not using an Executor with a named thread pool?
Currently I just have a Connector in server.xml:
Connector port=8080 protocol=org.apache.coyote.http11.Http11NioProtocol
connectionTimeout=2
redirectPort=8443 /
Assuming ~2000
On Mon, Mar 10, 2014 at 11:48 AM, Caldarale, Charles R
chuck.caldar...@unisys.com wrote:
From: John Smith [mailto:tomcat.ran...@gmail.com]
Subject: Re: NIO connector - connections and threads
Don't top post.
So are the open HTTP connections that use my web application code waiting
Collecting some peak usage data might be interesting. You definitely want
your max thread limit to be a bit above the number of concurrent requests
you're handling. Of course, that has to be balanced against limits on
other resources, such as memory and data base connections.
- Chuck
Is there a straightforward way to toggle or add something in Tomcat, in the
event a webapp is intentionally taken 'offline for maintenance? The user
would receive the same single notification page saying as much, for any and
all requests.
Tomcat 7.0.42
Deploy a ROOT web application whose 404 page says Down for
maintenance. You could even customize this kind of thing to only
respond to certain URL-prefixes (like [ROOT]/mywebapp/*).
What will you do while Tomcat is restarting, though, if you have to
restart?
Restarts take about a second or
We're getting killed by our hosting provider (RS) over bandwidth issues. I
swear we scoped this out but somehow were over our agreement by an alarming
amount.
Our daily bandwidth looks like this:
http://s17.postimg.org/btl0sj3jz/rs_traffic.png
That's ~4T/day in bandwidth.
I know it's a little
Installing the native library will make a difference. Whether the
difference is large enough to notice depends very much on your
application. If you want to improve your application's performance I
suspect your time would be better spent with a profiler to see where the
bottlenecks are in
On Mon, Mar 17, 2014 at 9:55 AM, Mark Thomas ma...@apache.org wrote:
On 17/03/2014 13:41, John Smith wrote:
We're getting killed by our hosting provider (RS) over bandwidth issues.
I
swear we scoped this out but somehow were over our agreement by an
alarming
amount.
Our daily
On Mon, Mar 17, 2014 at 10:25 AM, Mikolaj Rydzewski m...@ceti.pl wrote:
On 17.03.2014 15:15, John Smith wrote:
1. Yes, we have ~500,000 visitors per day, and the site is based around a
very popular game that is very data intensive (users creating, browsing
and
loading levels and replays
What effect would setting useSendfile=false have on a web application using
the NIO connector? I'm asking because I may want to use gzip compression in
the connector. The docs state:
*There is a tradeoff between using compression (saving your bandwidth) and
using the sendfile feature (saving your
MGwhen you enable sendfile support with request attr
org.apache.tomcat.sendfile.support = true
MGYou will need to set these 3 header attributes
org.apache.tomcat.sendfile.filename: Canonical filename of the file which
will be sent as a String
org.apache.tomcat.sendfile.start: Start
John
The consequences for disabling sendFile are extremely hard to quantify
as there are so many variables. I would normally expect there to be more
CPU load but how much more? No idea. It might be impossible to detect,
it might leaver your CPUs pegged at 100%.
The only way you will know
I should know this, but I want to confirm with smarter people on the board.
Assume the following:
1. Servlet receives an HTTP POST request. doPost(...) is called.
2. doPost(..) instantiates class X with each request
3. Class X calls a static method of class Y
Assuming I have no synchronization
If that is the case the tomcat jdbc
pooling library handling the call incorrectly and its a bug.
I'd be suspect of this. Are you actually using *org.apache.tomcat.jdbc.pool*?
Since it's a Tomcat module it seems an odd choice to use outside of Tomcat.
If the method is thread-safe - no issue. If it isn't thread-safe then
you have a problem.
Mark
Thanks Mark - Clearly and succinctly explained.
Best,
John
First terminology problem: class X isn't instantiated here, an object of
type class X is instantiated.
As Matisse once said, exactitude is not truth. This sort of hair splitting
isn't helpful. Say Class X is instantiated to a thousand programmers and
they'll understand that it means an
You must have been fun to have as a student.
Student is a vague term. Student of which grade, which subject? Student of
a trade? Student of life?
Unfortunately your lack of exactness means I can't understand your joke :)
(I was an even worse employee)
- John
On Tue, Mar 25, 2014 at 9:54 AM, Filip Hanik fi...@hanik.com wrote:
Please open a bug, and we will get this taken care of. I do have one
question,Aries library, on which call does it expect to return the
connection to the pool? XAConnection.close() or
XAConnection.getConnection().close(); ?
We see 404 error in localhost_access so this the place from where we can
dig into.
Is there any way we can enhance the logging/information in
localhost_access_log.
Or then how can debug what happens between user requests and 404 response,?
Outside of performance monitoring tools, you might
Tomcat 7.0.42, RHEL6, JDK1.7.0_25, Standalone TC configuration. IPTABLES
route port 80 to 8080
I've got a subdirectory like 'www.mysite.com/admin' that I want to put
under FORM based authentication. That's clear enough, and I've got the java
keytool cert working well enough on my dev box until I
On Tue, May 27, 2014 at 2:21 PM, Mark Thomas ma...@apache.org wrote:
On 27/05/2014 17:31, John Smith wrote:
Tomcat 7.0.42, RHEL6, JDK1.7.0_25, Standalone TC configuration. IPTABLES
route port 80 to 8080
I've got a subdirectory like 'www.mysite.com/admin' that I want to put
under FORM
2. With the SSL connector enabled, https://* is globally respected on the
entire webapp. Do I need to manually check the URL/protocol to deny or
redirect https to http outside of '/admin'? Is there any built in TC
mechanism or suggested best practice to handle this? or should I not care?
TC 7.0.54 / JDK 1.7.0_60 / RHEL 6
My webapp is the only one on my TC install. It's in webapps/ROOT. Iptables
routes 80 to 8080 and I'm using the NIO connector. There are two physical
servers with that same webapp, using session replication. Everything works
great.
There's a subdirectory /admin
On Thu, Jul 24, 2014 at 6:24 PM, Ognjen Blagojevic
ognjen.d.blagoje...@gmail.com wrote:
John,
On 24.7.2014 21:11, John Smith wrote:
1. Can I specify /admin/* as a security constraint url pattern so that
only
that directory runs under SSL?
Yes, you can.
2. The NIO connector
TC 7.0.54 / RHEL 6
I have two physical servers, each running an instance of TC. The servers
are behind a hardware loadbalancer. IPTables is routing request on 80 to
8080. Tomcat runs under a non-root user. All good.
I needed to protect an area of our webapp under SSL. Went ahead and
installed
TC 7.0.54 / RHEL 6
I have two physical servers, each running an instance of TC. The servers
are behind a hardware loadbalancer. IPTables is routing request on 80 to
8080.
This seems unnecessary. If you have a hardware load balancer in front of
Tomcat, it is the only thing that
Not contradicting anything Daniel is saying, but maybe something to add,
and maybe that's the missing part of the original puzzle :
If Tomcat is expecting HTTPS requests on port 8443, then any re-direct or
response that it is sending back is going to include that port number after
the
On Fri, Aug 1, 2014 at 11:54 AM, Mark Thomas ma...@apache.org wrote:
On 01/08/2014 16:30, Daniel Mikusa wrote:
You probably want the SSL certificate installed on your hardware load
balancer. End client's browsers are going to connect to the hardware
load
balancer, not Tomcat. Thus you'd
No, I am not really going that far. I am suggesting that that may be
the kind of thing that is happening, and that you may want to investigate
with a browser plugin, that the requests/responses are really what you are
expecting.
Your initial explanation was a bit confusing and lacking in
As your testing keep this process in mind. If you encounter a problem just
try to break down the flow from your browser to the server and back. If
you look at the request at each hop through this process, you can often
find where things went wrong. For example, did the request hit the LB?
Is your LB configured to listen on 8443, or on 443? It won't pick up the
port it's supposed to listen on from the TC instances; you have to specify
it.
Nailed it. Simplest solution, I didn't even consider it.
Thanks,
John
There is no response, since you are not even able to connect to that
IP:port.
If you are using the IP of the LB, then the LB is not accepting
connections on port 8443.
You won't get much further, unless you solve that first.
But I thought that you wanted your users to access via port 443
In my webapp there's a directory '/admin' that's protected under SSL. Users
are forced to use SSL via a security constraint in web.xml. It works great.
As mentioned in the docs and other places, it would be good to prevent SSL
everywhere else on the site, but I searched around and couldn't find
Thanks for letting us know what the issue was; many people never come back
and tell us what fixed it.
My pleasure. This list is awesome.
TLS is layer 5 so if the LB is operating at layer 4 it can't host the
cert. Some LBs can operate at layer 5 so it will depend on your LB
and/or its configuration.
Mark
I see. That's good to know. The LB is at 7.
On Fri, Aug 1, 2014 at 4:34 PM, Caldarale, Charles R
chuck.caldar...@unisys.com wrote:
From: John Smith [mailto:tomcat.ran...@gmail.com]
Subject: Restricting SSL access within webapp
What's the correct way to selectively restrict https to only one area of
a webapp?
Why would you want
All, Thanks for the thoughtful advice and replies.
To answer a few questions, belatedly, yes it would be an option to move the
admin tools to another instance of TC, as Leo suggested -- in a way a
better one, since it wouldn't need session replication, could exist on a
single server since the
You may find Wiki also useful:
http://wiki.apache.org/tomcat/FAQ/Password
-Ognjen
Write your own datasource implementation which wraps your datasource and
obscure your brains out (XOR http://en.wikipedia.org/wiki/XOR_cipher and
ROT13 http://en.wikipedia.org/wiki/ROT13 are great
TC 7.0.54 / RHEL 6 / JDK 1.7.0_60
I'm getting a pretty consistent error in my logs that started showing up
recently. I use logback and have a servlet catch all 500 errors and log
them. The error seems to be associated with one servlet that writes XML
output.
Two changes I made recently were
What's on line 182 of AbstractServlet.java?
-Terence Bandoian
It's the out.write(xml); line.
On Fri, Aug 8, 2014 at 9:10 AM, John Smith tomcat.ran...@gmail.com wrote:
On Thu, Aug 7, 2014 at 5:28 PM, Filip Hanik fi...@hanik.com wrote:
if you could capture the XML that you are trying to write, we can put it
into a test case and reproduce.
Filip
I'll try that -- I should be able
TC 7.0.54, RHEL 6, JDK 1.7.0_60. I have two RH servers with one instance of
TC on each, set up for clustering. There's a HWLB routing 80 to 8080 with 5
min sticky sessions.
My daily catalina logs are set up to just show SEVERE errors, every day
they average about *30mb* per server with the same
Smith tomcat.ran...@gmail.com wrote:
On Fri, Aug 8, 2014 at 9:10 AM, John Smith tomcat.ran...@gmail.com
javascript:; wrote:
On Thu, Aug 7, 2014 at 5:28 PM, Filip Hanik fi...@hanik.com
javascript:; wrote:
if you could capture the XML that you are trying to write, we can put
You haven't really provided any information, here. Please post full
stack traces.
You might want to do something like catch NPE around the area(s) where
they are being thrown, and log information about the requests that are
causing them. It may be something like a web search crawler
I'm trying to workout a managed backup scheme on a MySQL production
database with XtraBackup. According to our DBA, XtraBackup doesn't lock the
database, but issues a series of SHOW TABLE STATUS commands and then works
on the file system level.
Still, just as XtraBackup runs my logs start to blow
On Sun, Oct 12, 2014 at 5:56 AM, Stefan Mayr ste...@mayr-stefan.de wrote:
Hi John,
Am 11.10.2014 23:30, schrieb John Smith:
I'm trying to workout a managed backup scheme on a MySQL production
database with XtraBackup. According to our DBA, XtraBackup doesn't lock
the
database, but issues
I don't know about the recommended way, but personally I hate the
SPACE in Program Files, so I definitely prefer the 2nd option.
Same, I don't even bother with the second level directory. I just install
to c:\apache-tomcat...
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